Thermal Decomposition of Sodium Carbonate Decahydrate

Na2CO3·10H2O → Na2CO3 + 10H2O

概述

Washing soda (sodium carbonate decahydrate) loses its water of crystallization when heated. This dehydration reaction produces anhydrous sodium carbonate (soda ash). The hydrated crystals are transparent but become opaque white powder as water is driven off (efflorescence).

参与者

角色 物质 系数 状态
产物 Sodium Carbonate Na₂CO₃ 1 (s)
产物 Water H₂O 10 (g)

日常示例

When washing soda crystals are left in dry air, they slowly lose water and turn into a white powder through this efflorescence process.

工业重要性

无水碳酸钠（纯碱）是玻璃、纸浆造纸和洗涤剂生产的主要工业原料，年消费量超过5000万吨。

属性

类型
Decomposition
可逆
是
能量
吸热
ΔH
155.0 kJ/mol

相关反应

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

Frequently Asked Questions

What is the equation for Thermal Decomposition of Sodium Carbonate Decahydrate?
The balanced equation is: Na₂CO₃·10H₂O → Na₂CO₃ + 10H₂O.
What type of reaction is Thermal Decomposition of Sodium Carbonate Decahydrate?
Thermal Decomposition of Sodium Carbonate Decahydrate is a decomposition reaction. It is reversible under certain conditions.
Is Thermal Decomposition of Sodium Carbonate Decahydrate exothermic or endothermic?
Thermal Decomposition of Sodium Carbonate Decahydrate is endothermic (absorbs energy). The enthalpy change (ΔH) is 155.0 kJ/mol.